- Chemistry.
- hydrogen peroxide, H2O2 or H–O–O–H.
- a compound containing the bivalent group –O2–, derived from hydrogen peroxide, as sodium peroxide, Na2O2, or dimethyl peroxide, C3H6O2.
- the oxide of an element that contains an unusually large amount of oxygen.
- to use peroxide as a bleaching agent on (especially the hair).
- short for hydrogen peroxide, esp when used for bleaching hair
- any of a class of metallic oxides, such as sodium peroxide, Na 2 O 2, that contain the divalent ion – O-O –
- any of certain dioxides, such as manganese peroxide, MnO 2, that resemble peroxides in their formula but do not contain the – O-O – ion
- any of a class of organic compounds whose molecules contain two oxygen atoms bound together. They tend to be explosive
- of, relating to, bleached with, or resembling peroxide
- to bleach (the hair) with peroxide
